Vaginal tightening for pros, this triple pleasure balls set stimulates your pelvic floor muscles as you move forcing them to contract causing deliciously pleasurable sensations that not only tone your muscles but help you to have longer, stronger orgasms over time. Joined by a cord for ease of use and a fit that suits you, each of the 3 outer balls houses a weighted inner ball that vibrates against your vaginal walls. No batteries required. all you need is the movement of your body to set the balls a-knocking. Easy to clean and maintain, the skin-safe Abs balls are designed to be inserted one by one, providing almost twice the muscle toning power of a classic set of balls.